Earth's Magnetism
How Earth is a Magnet?
Define Positive charge:
When an object has more protons than electrons
What are the poles on a magnet?
North and South
How does a compass work?
The needle attracks towards the earth magnetic north
What are the main parts of an electromagnet?
Battery
Wire
Nail
What is a magnetic field?
An area around a magnet where magnetic forces can be detected
Define Negative Charge:
An object becomes negatively charged when it gains more electrons than protons
Give an example of something that has a permanent magnetic field.
Bar Magnet
Earth
Where are Earth's magnetic poles located?
At the top of the Earth in the Artic Region North of Canada and at the bottom of the Earth in Antarctica
What is something that relies on electromagnetism in the real world?
Maglev trains
Can Earth's magnetic poles move?
Yes they can!
What is a non-contact force?
a force that acts on an object without physical contact
What does the term "Attract" mean?
When unlike poles pull together
What's the difference between geographic north and magnetic north?
Geographic North: where and what we call north on a map
Magnetic North: Where the earth is actually magnetized
What happens to the electromagnet with the more coils it has?
The more coils, the stronger the electromagnet
Yes!
gravity, magnetism, or electromagnetism
What does the term "Repel" mean?
When two like poles push away
What does Maglev refer to?
Magnetic leviatation
How could you make an electromagnet stronger?
Add more coils or increase the voltage of the battery
Do animals rely on Earth's magnetism? Provide an example
Animal Magnetism: Birds, Sharks, Foxes, Trout..etc
What's the difference between contact and noncontact forces?
Contact forces must be touching to extert force where non-contact forces do not need to touch to exert a force
Define Magnet:
having the property of attracting iron and producing a magnetic field external to itself
What is the Electromagnetic Spectrum?
All types of electromagnetic radiation, organized by frequency or wavelength, ranging from low-energy radio waves to high-energy gamma rays
How you could turn a metal object into a magnet using a battery?
A battery with copper wire coiled around a nail would make a magnet!